Door stop and holder.



L. C. NORTON.

DOOR STOP AND HOLDER.

APPLICATION FILED MAY 3. 1915.

1,275,980. Patented Aug. 13, 1918.

Fig. 1.

InvenTo v Lewis C. NorTon by MWKW ATrys.

LEWIS C. NORTON, 01E CHICAGO, ILLINOIS, ASSIGNOR T0 NORT ON DOOR CHECKCOM- PANY, 0 CHIGAGO, ILLINOIS, A COOEATION OF WEST VG'IN.

DOOR S'lQP AND -HOER.

Specification of Letters Patent. Pajfl3ntig Aug 13, yet,

Application filed y 3, i910. serial No. 95,263.

To all whom it may concern:

Be it known that l, Lewis G. Non'ron, a

citizen of the United States, residing at Chicago, county of Cook, Stateof llllinois, have invented an Improvement in D001 Stops and Holders, ofwhich the following description, in connection with the accompanyingdrawing, is a specification, like characters on the drawing representinglike parts.

This invention relates to a door stop and holder of the general typeillustrated in my Patent No. 1,071,172, dated August 26,1913. The deviceof said application comprises two arms ormembers, each provided with afriction face adapted to engage that of the other member, one of saidarms being pivotally connected to the door and the other to the doorcasing, and a pivotal connection between said arms or members which isso constructed that the friction faces are moved toward and into contactwith each other as the door is opened.

The parts are so adjusted that the trio tion faces will be brought intofirm frictional contact with each other when the door is opened to thedesired point, the'friction between said faces operating to holdthe doorin this position.

unlocking the door and permitting it to close in the ordinary way.

While a device such as illustrated in myposition of a little more than90, yet it is not so satisfactory in holding the door firmly in an openposition between 90 and 180. It is often important thata door should becapable of opening through a complete 180, and when this conditionexists, it is often desirable to provide a stop which will hold the doorfirmly open at or near 180.

One of the objects of my present invention is the provision of animproved door holder which willhold the door firmly open in any positionbetween 90 and 180.

Other objects of the invention are to provide an improved door stop andholder which is so constructed that the friction faces will always bemaintained in proper come squarely into frictional engagement Theapplication of theright amount of force to the door tending to close itwill relieve the friction, thereby with each other when the door isopened,

a and also to improve door stops and holders of this type in other ways,alias will be more fully hereinafter setforth.

lln order to give an understanding of the invention l have illustratedherein a selected embodiment thereof which will now be described, afterwhich the novel features will be pointed out in the appended claims. v

Figure 1 is a perspective view showing my improved door stop and holderas applied to a door;

Fig. 2 is a plan view showing the operation of my device;

Fig. 3 is an enlarged section on the line 2-2, Fig. l.;- 1

Fig. 4. is a perspective view of the stud 10.

In the drawings, 1 indicates a doorand 2 the door casing. My improveddoor holder and. stop comprises the two arms 3 and a Which are pivotallyconnected together at 15, and one of which is connected to the door, andthe other of which is connected to the door casing. in the illustratedembodiment of'my invention the arm 4. is connected to the door and thearm 3 is connected to the door casing. The arm 3 may be connecteddirectly to the door casing or may constitute the arm of a door check 20which is shown as secured to a bracket 21 that is fastened to the doorcasing. This method of installing a door check is usually adopted whereit is necessary to open the door through 180. llhe arm A: is providedment with the head 5. When the door is opened the arm 4 will have aswinging movement relative to the door and to the shoe 7, and theconstruction of the screw-threaded stud is such that this movement willscrew the two heads 5 and 8 toward each other so as to bring thefriction faces 6 and 9 into engagement with each other, as ,shown by thefull and dotted lines in Fig. 2. The stud 10 is so adjusted that whenthe door 1 is opened to the desired point the friction faces 6 and 9will be brought firmly into frictional engagement, thus locking the doorin open position. A slightpressure on the door tending to close it willrelease the fricconnection between the arm 4 and the door,

the axis of the hinge 22 of the door and the pivotal connection betweenthe arm 3 and the door check 20 are in approximately the same line, thedoor may have a slight movement without appreciably changing the anglebetween the arms 3 and 4 and hence the door will not be firmly held ,inany position. The angle between the arm 4 and the door, however, isvaried appreciably by any swinging movement of the door between the 90and the 180 position and by placing the frictionfaces as shown in thedrawings, a device is provided which will firmly hold the door in anydesired position between 90 and 180.

In order that the door may be firmly locked it is desirable that thefriction faces 6 and 9 should be maintained parallel to each other sothat when they are in engagement, they will have firm contact with eachother throughout their entire'extentQ To accomplish this it is,necessary'to' hold.

a the stud 10 exactly perpendicular to the faces. In the deviceillustrated in the'abovementioned patent the stud is anchored to one ofthe heads by means of a key, but where a key is used, the stud is apt tobe forced out of its exact right-angular position, and the result isthat thetwo friction faces do not stand exactly parallel and when thedoor is open they engage each. other at one side only. As an improvementon the construction illustrated in said patent.

I propose to make the head 8 with a noncircularopening 11, and to inakethe in 10 with a non-circular portion 12 which tightly fits the opening11. A nut 16 serves as a means for adjusting the pin or stud 10 in thehead 8 so as to bring the friction faces into contact when the door isopened to the desired extent. By means of this construcpose of thisconstruction is to provide for shifting the arms 3 and 4 relative toeach other in a vertical direction to permit the device to 'be readilyattached to any door. I claim:

1. In a door 'holder, the combination with a door and its casing, of ashoe secured to the door and provided with a head having afriction-face, a bracket secured to the door casing, a door checksustained by said bracket, an arm pivotally connected to the door check,a link pivotally connected at one end to the arm and having at its otherend a head provided with a friction face, one of said heads havinganon-circular aperture therein, a'stud having a non-circular portionfitting said aperture and provided with a screw-threaded portion havingscrewthreaded engagement with the other head whereby opening movement ofthe door will move. said friction faces toward each other and closingmovement of the door will separate said faces from each other. 2

2. In a door holder, the combinationwith a door and its door casing, ofa door-holding device connecting the door and door casing and comprisingtwo members, each having a head provided with a friction face, one ofsaidheads having a non-circular opening extending therethrough atrightangles to said face, a stud having a central non-circular portionfitting said opening and provided with screw-threaded portions. at eachend projecting beyond said head, one of said screw-threaded portionshaving screwthreaded engagement with the other head, and a nut on theother-screw-threaded end of the stud whereby opening movement of thedoor will bring the frictional faces into frictional engagement and thestud will be maintained at all times at right angles to the frictionfaces.

Intestimony whereof Ihave signed my name to this specification.

- LEWIBCJNORTON.

